Analysis on Biomechanical Relationship Between Calcaneal Cyst Lesion Size and Pathological Fracture
10.16156/j.1004-7220.2023.02.15
- VernacularTitle:跟骨骨囊肿病灶范围与病理性骨折的生物力学关系分析
- Author:
Pengfei LI
1
,
2
;
Zihuan XU
1
,
2
;
Yongqin WANG
1
,
2
;
Zhihao SU
1
,
2
;
Wanju SUN
1
,
2
;
Ming NI
1
,
2
,
3
Author Information
1. School of Health Science and Engineering, University of Shanghai for Science and Technology
2. Department of Orthopedics, Shanghai Pudong New Area People′ s Hospital
3. Department of Science Development, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine
- Publication Type:Journal Article
- Keywords:
solitary bone cyst (SBC);
calcaneus;
pathological fracture;
gait phase;
finite element analysis
- From:
Journal of Medical Biomechanics
2023;38(2):E303-E309
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the relationship between lesion size of solitary bone cyst ( SBC) and pathological fracture of calcaneus, so as to provide references for the treatment of SBC. Methods The three dimensional (3D) finite element model of foot and ankle was established based on CT images. Four models with gradient spherical bone defects were constructed in the focal area to simulate different SBC lesion sizes, and the biomechanical characteristics of calcaneus in different gait phases were analyzed. Results With the increasement of SBC size, the kinematics of calcaneus did not change significantly, but the peak stress of calcaneus increased gradually. When the SBC size exceeded 75% of the calcaneal width, the stress in calcaneal sulcus and cortical bone below SBC increased by 1. 48 times and 7. 74 times, respectively. Conclusions The risk of pathological fracture increases when the SBC diameter exceeds 75% of the calcaneal width, and early surgical intervention should be recommended. The calcaneal sulcus and the cortex bone below SBC are stress concentration regions and can be used as important areas to evaluate pathological fractures.
